﻿84 CONVOLVULACEJE (Baker & Wriglit), [Ciiscuta. 



late, at most as lonj^ as the tube. Stamens inserted at the throat of 

 the corolla-tube, v ith a membranous scale below each of them arising 

 from low down in the tube ; filaments short, fiHform ; anthers 

 oblong or globose. Ovary completely or partially 2-celled, 4-ovuled ; 

 styles free from the base or connate ; stigmas clavate or capitate. 

 Fruit capsular or fleshy. Seeds with a spiral embryo with incon- 

 spicuous cotyledons. 



Leafless parasites, with filiform twining stems and small whitish or rose- 

 coloured flowers. 



DisTSiB. Cosmopolitan. Species about 80. 



Subgenus 1. Pachystigma. Stjies free to the base ; stifrmns clavate. 



Caljx angular (1) angulata. 



Calyx not angular : 



Corolla llin. long (2) Gerrardii. 



Corolla 2 lin. long : 



Styles longer than the stigmas ... (3) africana. 



Styles not longer than the stigmas : 



Calyx as long as the corolla-tube ... (4) nitida. 

 Calyx shorter than the corolla- 

 tube (5) natalensis. 



Subgenus 2. Gbammica. Styles free to the base, unequal; stigmas 

 capitate. 



Calyx shortly saccate at the base ... ... ... (6) appendiculata. 



Calyx not saccate at the base ... ... ... ... (7) Medicaginis. 



Subgenus 3. MonogynellA. Styles connate ; stigma capitate, 2-lobed. 



Only South African species ... ... ... ... (8) cassytoides. 



1. C. angiilata (Engelm. in Trans. Acad. Sc. St. Louis, i. 474); 

 stem filiform ; flowers l^— 1-|^ lin. long, If lin. wide when expanded, 

 in short cymes; bracteoles linear-lanceolate ; pedicels longer than the 

 flowers ; calyx 5-angIed, deeply 5-lobed ; lobes broadly ovate, obtuse ; 

 corolla widely campanulate ; lobes ovate, obtuse ; anthers obtu.-e, 

 deeply cordate at the base, about as long as the filaments ; scales 

 ovate, fimbriate, incurved, slightly longer than the corolla-tube; 

 ovary depressed-globose ; stigmas cylindrical or subclavate, shorter 

 than the style. C. africana, Choisi/, Cusmt. Enum. 176, and in 

 DC, Prcd. ix. 454, partly ; Drege, Zicei PJlaniengeonr. Bocumente, 

 80. 



Coast Region: Cape Div. ; Wynbcrg, Jfarrey .' Worcester Div.; Dutoits 

 Kloof, 2000-3000 ft., Dreje, ! Caledon Div. ; Baviaaus Kloof, near Genadendal, 

 Burchell, 7792 1 Onrust Eiver, 1500 ft., ScldecUer, 9506! Houw Hoek, 

 SchltcUtr, 7381! 



2. C. Gerrardii (Baker) ; stems very slender ; cymes few-flowered, 

 congested into dense clusters ; pedicels none or very short ; calyx 

 half as long as the corolla ; lobes ovate-deltoid, much exceeding the 

 very short tube ; corolla campanulate, 1 lin. long ; lobes oblong, 

 obtuse, as long as the tube; stamens elightly shorter than the 

 corolla-lobes; anther oblong, slightly longer than the very short 



